India, Oct. 31 -- For nearly four decades, India has chased the dream of building its own jet engine, but the breakthrough remains elusive. The result? Continued dependence on foreign technology, expensive imports, external vendors and lengthy overseas testing.

D-Propulse is attempting to address one part of this challenge through a new propulsion technology that promises lighter, more efficient engines for high-speed applications.

Founded in 2025 by defence analyst Saurav Jha and former DRDO scientist Dr V Ramanujachari, D-Propulse is developing rotating detonation engines (RDEs) for high-speed drones and missiles. Unlike conventional engines that burn fuel through a steady flame, RDEs use supersonic detonation waves to generate thrust...